The Defusable Clock kit is an electronics kit that lets you build a scary looking clock that you can actually "defuse". Only the electronics are included -- you use your imagination to build the device you want! You can get ideas from the gallery of defusable clocks.
In light of recent developments, please be responsible in how you use this kit. Think twice about brining one of these to school or any public place!
The Defusable Clock is a fully-functional alarm clock just like you'd expect (a normal beeping alarm, snooze alarm, etc.). But at any time you can press the big red button to start a scary countdown sequence exactly like bombs in Hollywood movies.
There are 4 wires across the top of the clock. You have 10 seconds to choose the correct wire to cut: one wire stops the countdown and saves the day, two have no effect, and one will "detonate" the device immediately. These role of each wire is randomly assigned when the detonate button is pressed, so it's a new challenge every time.
Also, the wires are attached with screw terminals, so you can replace them easily. If you don't want to actually cut the wires, you can just pull them out of the screw terminals if you keep the screws a little loose. Extra wires are available below.
Soldering is required to assemble. You can learn to solder, and this kit can be your first project. All components are through-hole; there are no surface mount parts. There are many soldering tutorials: here is a good one.
Requires 9V DC power adapter with 2.1mm center-positive plug (not included, but very common). Also sold here.
Here is an example of a completed kit in action:
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